Self-hardening pyrotechnic composition



United States atent 2,700,603 iatented Jan. 25, 1955 Fice 2,700,603 sELF-HAnoENmG PYRorEcIrNrc COMPOSITION David and Henry J. Eppig, Dover, and William .1. Powers, Wharton, N. J.

No Drawing. Application October 13, 1949, Serial No. 121,216

3 Claims. (Cl. 5224) (Granted under Title 35, U. S. Code (1952), sec. 266) The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment of royalty thereon.

The present invention relates to the incorporation into form of These candles Sodium nitrate 35 35 40 40 60 60 35 60 Magnesium 65 65 60 60 40 40 65 40 Polytunctional Mercaptan (Thiokol) 20 10 10 10 20 Oumene Hydroperoxlde (Oatay Lead Peroxide (Catalyst) Table II.--P0lyesters (Vibrins) 1 2 t 3 I 4 Barium nitrate 35 65 50 Magnesium", 65 35 50 75 Polyester r 10 20 40 -Benzoyl Peroxide (Catalyst) 0.05 0.4 0.6 0.8

Strontium nitrate 65 50 25 Magnesium 65,. 35 50 75 Dicnlorstyrene (monomeric+polymeric) 10 20 30 40 Benzoyl Peroxide 0. 5 1. O 1. 5 2.0

Stannic chloride Catalyst The above particular exemplifications are cited merely as illustrative examples and are not to be understood as limiting the scope of the invention.

Having thus described the invention What is clalmed as new is:

to Without any appreciable shrinkage.

2. A pyrotechnic composition consisting of sodium nitrate, magnesium, from 5 to 40 per cent of a polyfunctional mercaptan and an appropriate catalyst selected from the group consisting of peroxides and tin compounds.

composition 3. A mixture which consists of magnesium selected from the group consisting 

2. A PYROTECHNIC COMPOSITION CONSISTING OF TRATE, MAGNESIUM, FROM 5 TO 40 PERCENT OF A POLYFUNCTIONAL MERCAPTAN AND AN APPROPRIATE CATALYST SELECTED FROM THE GROUP CONSISTING OF PEROXIDES AND TIN COMPOUNDS. 